package com.code.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.code.common.R;
import com.code.entity.Employee;
import com.code.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;

/**
 * 员工管理
 * @author admin
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        // 1.将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        // 2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        // 3.如果没有查询到则返回登录失败的结果
        if (emp == null) {
            return R.error("登录失败");
        }

        // 4.密码比对，如果不一致则返回登录失败结果
        if (emp.getPassword().equals(password)) {
            return R.error("登录失败");
        }

        // 5.查看员工状态，如果为已禁用状态，则返回已禁用结果
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }

        // 6.登录成功，将员工id存入session并返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        try {
            // 清理session中保存的当前登录员工的id
            request.getSession().removeAttribute("employee");
            return R.success("退出成功");
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {
        log.info("新增员工，员工信息：{}", employee.toString());

        // 设置初始密码为123456，需要进行md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        // employee.setCreateTime(LocalDateTime.now());
        // employee.setUpdateTime(LocalDateTime.now());
        // Long employeeID = (Long) request.getSession().getAttribute("employee");
        // employee.setCreateUser(employeeID);
        // employee.setUpdateUser(employeeID);

        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        log.info("page = {},pageSize = {}, name = {}", page, pageSize, name);
        try {
            Page employeePage = employeeService.employeePage(page, pageSize, name);
            return R.success(employeePage);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee) {
        log.info(employee.toString());

        long id = Thread.currentThread().getId();
        log.info("线程id为：{}", id);
        // Long empId = (Long) request.getSession().getAttribute("employee");
        // employee.setUpdateTime(LocalDateTime.now());
        // employee.setUpdateUser(empId);
        try {
            employeeService.updateById(employee);
            return R.success("员工信息修改成功");
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        log.info("根据id查询员工信息...");
        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");
    }
}
